A gradient NdFeB magnet includes an NdFeB magnet block extending along a magnetization direction and having a plurality of surfaces perpendicular to the magnetization direction. A first film, is disposed on one of the surfaces. A second film is disposed on another one of the surfaces, opposite of the one of the surfaces. The first film and the second film are diffused into the NdFeB magnet block dividing the NdFeB magnet block into an edge region, a transition region, and a central region along a plane perpendicular to the magnetization direction wherein the edge region has a coercivity that remains constant in a direction perpendicular to the magnetization direction, and the coercivity, along said magnetization direction, gradually decreases from the one of the surfaces and the another one of the surfaces towards a point located therebetween. A method of making the gradient NdFeB magnet is disclosed herein.

Generally, a system for generating a magnetic field having a desired magnetic field strength and/or a desired magnetic field direction is provided. The system can include a plurality of magnetic segments and/or a plurality of ferromagnetic segments. Each magnetic segment can be positioned adjacent to at least one of the plurality of magnetic segments. Each ferromagnetic segment can be positioned adjacent to at least one of the plurality of magnetic segments. In various embodiments, a size, shape, positioning and/or number of magnetic segments and/or ferromagnetic segments in the system, as well as a magnetization direction of the magnetic segments can be predetermined based on, for example, predetermined parameters of the system (e.g., a desired magnetic field strength, direction and/or uniformity of the magnetic field, a desired elimination of a magnetic fringe field and/or total weight of the system) and/or based on a desired application of the system (e.g., performing a magnetic resonance imaging of at least a portion of a patient and/or performing a magnetic resonance spectroscopy of a sample).

A magnetic holding system for securely affixing an object to a wall surface including a first magnetic sheet layer having specific polarity line spacing, a second layer having magnetic receptive properties, and finally an object with a mounting surface designed to abut the second layer, the mounting surface including a magnetic material having specific polarity line spacing that is substantially the same as the specific polarity line spacing of the first layer and a sheet of steel, such that, when the object polarity line spacing is aligned with the first layer polarity line spacing, the object is securely held to the wall.

A flexible permanent magnetic material, a preparation method and an application thereof in magnetic biological effect products are provides, relating to the technical field of medical equipment. Raw materials of the flexible permanent magnetic material of the application include the following components in parts by weight: 0-70 parts of anisotropic neodymium iron boron powder and 0-40 parts of anisotropic samarium iron nitrogen powder and 3-20 parts of binder.

A flexible magnetic component can include a magnetizable powder including a rare earth element. The flexible magnetic component can also include a polymer binder. The flexible magnetic component can define a first surface and a second surface opposite the first surface. A first magnetic field adjacent to the first surface can have a field strength at least 3 times greater than a field strength of a second magnetic field adjacent to the second surface, and the flexible magnetic component can elongate greater than 20% before a permanent deformation occurs.

A magnetized playing card having: a first component; and a second component that joins with the first component to form the magnetized playing card; the first component having: a front first component face; a back first component face; wherein at least a first section of the back first component surface is a magnetized surface; the magnetized surface having: a plurality of magnetic poles comprising north poles and south poles; wherein the north poles and the south poles are in parallel with each other, and the north poles alternate with the south poles in an alternating formation; and wherein the alternating formation faces a first direction to create a first magnetic alignment; the second component having: a front second component face; a back second component face; wherein the second component joins with the first component via the back first component face and the back second component face.

There is provided an apparatus for forming a magnetic pigment pattern on an article. The apparatus includes: a magnetic pattern mold having nonmagnetic pattern grooves engraved in a predetermined pattern and providing predetermined magnetic field lines on a pattern-forming object surface of an article by generating magnetism in areas outside the nonmagnetic pattern grooves; and a spray unit spraying an adhesive resin composite containing a ferromagnetic pigment onto the pattern-forming object surface of the article. A predetermined magnetic pigment pattern is formed while the magnetic pigment of the adhesive resin composite that is applied to the pattern-forming object surface of the article is rearranged along magnetic field lines generated by the magnetic pattern mold.

A magnetic hanging device for use in combination with a magnetically attractive surface. The device includes: a magnetic hanger comprising a magnetic sheet and a magnetic-sheet reinforcement suspending layer having a rear side to which the magnetic sheet is fixed and a front side having a hanging member attached thereto; and a plurality of spaced apart ribs disposed on the front side of the hanger, at least one of the ribs being a single-piece non-segmented rib. The hanger is configured in proportion to Young's modulus of elasticity; the length of the ribs; the cube of the thickness of the reinforcement suspending layer; and indirectly proportional to the average distance between the ribs.

An amphoteric magnetic material and a manufacturing method thereof are disclosed. The amphoteric magnetic material consists of: 5% to 88% of a permanent magnetic material, 5% to 88% of a soft magnetic material, 6% to 16% of a binder, and 1% to 10% of an auxiliary agent. The amphoteric magnet manufactured by mixing two phases without microscopic intergranular exchange coupling interaction has unexpected effects: the range of a magnetically attracted object is expanded to include an amphoteric magnet; the range of a magnetically attractive object is expanded to include an amphoteric magnet; the minimum value of the magnetic attraction force is increased, the magnetic attraction force is more uniform, and it is smoother to move and rotate an object. The effect obtained by two layers of the soft magnet and the permanent magnet can be realized by a single layer structure of the amphoteric magnet.

An apparatus and method for shielding against radiation and providing thermal insulation is disclosed. The apparatus includes multiple layers including an inner layer, an outer layer, and a radiation shielding layer composed of materials such a tungsten sheet, multiple tungsten sheets, staggered rows of tungsten rods, and/or a polymer radiation shield composed of a polymer and radiation attenuating material. Insulation layers may also be incorporated into the apparatus. The method for protecting against radiation includes the steps of providing a radiation shielding apparatus and securing such apparatus to a radiation emitting structure.